Question
Which of the following is true about the circulatory system of animals?
Answer: Option A
:
A
All vertebrates, annelids like earthworms and cephalopods like octopi, have a closed circulatory system, with the complete separation of both systemic and pulmonary circuits. The rest of the animal world has an open circulatory system. Birds, like mammals, have a 4-chambered heart. Amphibians and reptiles have 3 chambers in their hearts.
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:
A
All vertebrates, annelids like earthworms and cephalopods like octopi, have a closed circulatory system, with the complete separation of both systemic and pulmonary circuits. The rest of the animal world has an open circulatory system. Birds, like mammals, have a 4-chambered heart. Amphibians and reptiles have 3 chambers in their hearts.
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